In the following problem, check that it is appropriate to use the normal approximation to the binomial. then use the normal distribution to estimate the requested probabilities. what's your favorite ice cream flavor? for people who buy ice cream, the all-time favorite is still vanilla. about 26% of ice cream sales are vanilla. chocolate accounts for only 14% of ice cream sales. suppose that 172 customers go to a grocery store in cheyenne, wyoming, today to buy ice cream. (round your answers to four decimal places.)